Phonolyg Exam

Please, do you beautiful people can help me answer any of this questions?

The syllable /ɪʃ/ is a productive morpheme of English. It derives nouns into adjectives
which basic meaning is “similar to, or pertaining to [NOUN]. A few examples are:
/ˈtʃaɪldɪʃ/
/ˈfuːlɪʃ/
/ˈgrɪːnɪʃ/
Observe, however, that the following derived adjectives are ill-formed English words, thus not belonging
to the English lexicon:
Fish (n.) *Fishish (adj.)
Rubbish (n.) *Rubbishish (adj.)
These facts can be explained as an entailment of a fundamental phonotactic rule of English. Discuss it.

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Look at the following two items of the English lexicon.
(a) Metropolitan
(b) Ice-skating

Most speakers of American English implement these items phonetically as follows:
(a) [ˌmetrəˈpɑlɪtən]
(b) [ˈaɪˌskeɪtɪŋ]

However, some bilinguals of Brazilian Portuguese and English may implement those items phonetically
as follows:
(a) [ˌmetroˈpɔlɪtã] or [ˌmetroˈpɔlɪtɑ]
(b) [ˈaɪsiskeɪtɪn]

How can the changes connected to consonant sounds be explained in terms of phonotactics (such
changes involve consonant deletion, or intrusion of additional vowel sounds before or after
consonants)?

Which effect would the pronunciation of (b) probably have on a hearer who is not familiar with the
speech of Brazilian Portuguese-English bilinguals, and if the compound word